I remember watching Geoff Boycotts 100th 1st Class Century at Headingly as a young lad and the Test Match ground to a halt for about 15 minutes to get over a pitch invasion. Luckily it happened at Boycott's home ground and arguably most of the crowd were Yorkshire folk. Now it's debatable whether that many centuries is a greater feat than Kun's goals for City, but a mere goal celebration won't seem for enough to justify it!
I'm not suggesting a pitch invasion by the way as the whole team will probably receive bookings for entering the crowd if Mike Dean is anywhere near, whilst any prolonged celebration will probably see us penalised for time wasting. Possibly and if the situation allows then as soon as Kun bags that goal then after the immediate celebration he should be substituted to allow a proper individual ovation.